Question

if x = 4 and y = -3 ,then find the values of each of the following using identity​

Answer 1

Step-by-step explanation:

$( \frac{x}{5} - \frac{y}{3} )( \frac{ {x}^{2} }{25} + \frac{xy}{15} + \frac{ {y}^{2} }{9} ) \\ \\ put \: x = 4 \: and \: y = - 3 \\ \\ ( \frac{4}{5} + 1)( \frac{16}{25} - \frac{12}{15} + \frac{9}{9} ) \\ \\ (\frac{9}{5} )( \frac{240 - 300}{375}) + 1 \\ \\ \frac{9}{5} \times ( \frac{ - 60 + 375}{375} ) \\ \\ ( \frac{9}{5} )( \frac{315}{375} ) \\ \\ \frac{63 \times 9}{375} \\ \\ \frac{23 \times 9}{125} \\ \\ 1.656$